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nvmem: mtk-efuse: use stack for nvmem_config instead of malloc'ing it 

nvmem_register() copies all the members of nvmem_config to
nvmem_device.  So, nvmem_config is one-time use data during
probing.  There is no point to keep it until the driver detach.
Using stack should be no problem because nvmem_config is pretty
small.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Masahiro Yamada 2017-10-21 01:57:39 +09:00 committed by Greg Kroah-Hartman
parent 01d35cabd5
commit 4dd5f60e9a
1 changed files with 10 additions and 14 deletions
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24
drivers/nvmem/mtk-efuse.c
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@ -49,7 +49,7 @@ static int mtk_efuse_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
struct resource *res; struct resource *res;
struct nvmem_device *nvmem; struct nvmem_device *nvmem;
struct nvmem_config *econfig; struct nvmem_config econfig = {};
void __iomem *base; void __iomem *base;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@ -57,19 +57,15 @@ static int mtk_efuse_probe(struct platform_device *pdev)
if (IS_ERR(base)) if (IS_ERR(base))
return PTR_ERR(base); return PTR_ERR(base);
econfig = devm_kzalloc(dev, sizeof(*econfig), GFP_KERNEL); econfig.stride = 4;
if (!econfig) econfig.word_size = 4;
return -ENOMEM; econfig.reg_read = mtk_reg_read;
econfig.reg_write = mtk_reg_write;
econfig->stride = 4; econfig.size = resource_size(res);
econfig->word_size = 4; econfig.priv = base;
econfig->reg_read = mtk_reg_read; econfig.dev = dev;
econfig->reg_write = mtk_reg_write; econfig.owner = THIS_MODULE;
econfig->size = resource_size(res); nvmem = nvmem_register(&econfig);
econfig->priv = base;
econfig->dev = dev;
econfig->owner = THIS_MODULE;
nvmem = nvmem_register(econfig);
if (IS_ERR(nvmem)) if (IS_ERR(nvmem))
return PTR_ERR(nvmem); return PTR_ERR(nvmem);